package chappter04.demo1.Example30;

public class Example30 {
    public static void main (String[] args){
        int result = divide (4,-2);
        System.out.println(result);
    }
    public static int divide (int x,int y){
        if (y<0){
            throw new DivideByMinusException ("除数是负数");    }
        int result = x/y;
        return result;
        }
    }